Diedbich wilhelm ernsting



UNITED STATES DIEDRICH WILHELM ERNSTING,

PATENT OFFICE.

OF BREMEN, GERMANY.

vDevlcr. FOR CLAMPING conos, sbo.

. SPECIFICATION forming Application tiled October 24, 1883. (No model.)

To all whom it may concern:

Be it-lrnown that I, ERNsTING, of Bremen, in the Empire of Germany, have invented a new and useful Improvement in Devicesy i'or Clamping Cords or Ropes, of which the following is a'speciflcation.

This invention has reference to an improved DIEDRICH WILHELM i fendu,

in Fig. 2, the clasp-plate B is turned outwardly on its pivot-pin D, and thereby the cord or ropeT placed between the lower edges, of the clasp-plates B and C, as shown in dotted lines in Fig. 2. On releasing the cord or ropethe clasp -plates B and C are drawn in upward direction by the action of the weight of the shade roller or weight, and

device for reliably `clamping cords, ropes, or l thereby the cord or rope rigidly clamped bechains; and the invention consists of a device l tweenthe edges of the for clamping cords or ropes, composed of a supporting main plate, ofy a U-shaped claspplate 'pivoted to ears of the supporting-plate, and of a second U -shaped clasp-plate that is pivoted to the first clasp-plate with its open side inward, so that the lower edges or jaws of the clasp-plates bite7 the cord or rope that is passed through between the two claspplates, as will appear more fully hereinafter, and iinally be pointed out in the claims.

In the accompanying drawings, Figure 1 represents a-front view of myiinproved clamping device for cords and ropes; and Figs. 2 and 3 are vertical transverse sections, showing the same respectively as released from and applied to the cord or rope.

Similar letters of reference indicate corresponding parts. 4

A in the drawings represents the supporting main plate of niy improved clamping device, which plate is made of4 U-shaped crosssection and screwed at the upper and lower ends to a window-casing when used for clamping-cords ot' window shades or to any other suitable point of support when used for clamping hoisting ropes or chains.

To the supporting-plate A is pivoted, at D, a clasp-plate, B, which is also of U-shaped cross-section, while a second clasp-plate, C, of

similar cross-section, is also connected to the first clasp-plate, B, by a second pivot, E. The clasp-plate C is so connected to the claspplate B that its open inner part faces the open part of the clasp-plate B, while its closed middle part is on the outside, as shown in Fig. 2. The cord, rope, or chain T to be -clamped is passed through the space formed between the pivots D and E and the claspplate C, and can be moved freely up and down between the clasp-plates B and C when they are stored away in vertical positions on the main plate A, as shown inFig. 2. As soon as the lower end of the cord or ropeT is moved sidewise in the direction of the arrow shown plate clasp-plates B and C, which edges act like jaws and bite into the cord or rope, so that the same is rigidly held in this position, as shown in Fig. 3. The greater the tension that is exerted on the cord or rope the greater will be the biting action exerted thereon by the clamping-edges f and g. By pulling the' cord or rope downward the clasp-plates drop back into their vertical positions into the main plate A, whereby the cord or rope is released and its free play secured again.

The clamping device can be made cheaply of sheet metal of suitable size and strength, and is readily operated, simply moving the cord or rope sidewise and then letting it go, by which motions the reliable clamping action of the clasp-plates on the cord or rope is secured.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. A device for clamping cords, ropes, orA

chains, consisting of a ianged main plate, A, a U-shaped clasp-plate, B, pivoted totheniain plate, and of a second U-shaped clasp-plate pivoted with its-open side toward the clasp- B, substantially as set forth.

2. The combination of a supporting main plate, A, a U-shaped clasp-plate, B, pivoted to the main plate, a second U-shaped clasp, C, pivoted with its open side toward the claspplate to the saine, and a cord, rope, or chain, T, that is passed through the space between the pivots of the clasp-plates and the closed middle portion of the clasp plate C, and adapted to be clamped by the lower edges or jaws of the clasp-plates, substantially as specified.

In testimony whereof Ihave signed this specication inthe presence of two subscribing wit- DIEDRICH WILHELM ERNS'IING. Witnesses:

J. M. AcHiENKnR. I. M. BEsT.

IOO 

